Oh, you'd be surprised what some people take to get high. There's people out there that use gabapentin and pregablin to get high, the usual OTC cold medicines, and yes, even Benadryl! Seriously, when people are that desperate to get high, they will literally try anything that has "drowsiness" and similar side effects on them. This isn't from doing this personally, but I do know for a fact that people out there do that. It's sad, really.